Hum,

VB Code:
  1. Public Sub ShowForm()
  2.         If Me.InvokeRequired Then
  3.             Me.Invoke(New HideShowFormDelegate(AddressOf ShowForm))
  4.         Else
  5.             BackgroundWorkerExample.Form2.Close() ' Add this one
  6.             Me.Show()
  7.         End If
  8.     End Sub

Btw, When next time when u add Vb code then put it inside VBCODE tags